. Factory and industrial management. heat units fed into it inthe shape of coal to the heat units taken up by the water in the boiler,or the steam made, reduced to equivalent evaporation from and at212 degrees F. With that end in view, the ordinates are B. T. U. perpound of coal multiplied by the coal fed to the stokers per boiler horseipower developed. The upper row of abscissal figures are water-heatingsurface per boiler horse power developed. The lower row of abscissalfigures are pounds of water per square foot of water-heating surfaceper hour. Near the left of the plotting will be noticed
. Factory and industrial management. heat units fed into it inthe shape of coal to the heat units taken up by the water in the boiler,or the steam made, reduced to equivalent evaporation from and at212 degrees F. With that end in view, the ordinates are B. T. U. perpound of coal multiplied by the coal fed to the stokers per boiler horseipower developed. The upper row of abscissal figures are water-heatingsurface per boiler horse power developed. The lower row of abscissalfigures are pounds of water per square foot of water-heating surfaceper hour. Near the left of the plotting will be noticed three points al-most in the same place; they are each a different stoker, under-feed,over-feed, and coking types. The dotted line connects the ordinaryhand-fired boiler tests ; the full line connects the mechanical-stoker tests. Though the average British thermal units per boiler horse powerdeveloped, fed in the shape of coal, is 47,019 for the mechanical stokertests and 45,009 for the hand-fired tests, I will not say that hand fir-. THE UPPER PICTURE SHOWS PROCTORS SHOVEL STOKER: THE LOWER, PROCTORSCOKING STOKER, DESIGNED FOR SMOKELESS FIRING. 731 yz2 THE ENGINEERING MAGAZINE.
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Keywords: ., bookcentury1800, bookdecade1890, booksubj, booksubjectengineering
